Babesiosis is caused by microscopic parasites that infect red blood cells. Babesia microti is spread by blacklegged ticks or deer ticks (Ixodes scapularis). It mainly occurs in parts of the Northeast and upper Midwest and it usually peaks during the warm months. Babesia infection can range in severity from asymptomatic to life-threatening. The infection is both treatable and preventable.
For further information we refer you to:
Life cycle of the Parasite Babesia, (B.microti or B.divergens) including the infection to humans